Safety gas-valve.



PATEI-IIED AUG. 4, 1908.

F. YOGKEY & G. D. MoLEOD. SAFETY GAS VALVE. APPLICATION FILED MAR. 10,1908.

INVENTOR 5 ATTORNEY WITNESSES:

UNITED STATES PATENT OF ICE; f

FOREST YQGKEY AND CHARLES D. McLEOD, OF SICUX CITY, IOWA.

No. sconce.

: s'arn'rv GAS-VALVE.

Patented Au 4, 190a.

Application filed March 10, 1908. Serial No. 420,175.

To aZZ whom it may concern:

- Be it known that we, FoREs'r YocKnY and CHARLES DJloLnon, citizens of the United States, residing-at Sioux City, in the county of Woodbury and State of Iowa, have invented new and useful Im rovements in Safety scribed and pointed out in the claims.

It is well known that many accidents and deaths result from ignorance and carelessness 1n the ad ustment of gas burners and 1n blowing out the light ivithout stopping the flow of gas. Our invention makes it impossible for the gas to flow after the light is extinguished,

as putting out the light automatically closes the gas cock. This is accomplished by the devices shown in the accompanying drawing in which Figure 1 is a longitudinal section of gas fixture-showing the bracket, arm and burner'. Fig. 2 is v the valve. Fig. 3 is a vertical section of gas burner or lamp and section of nipple. Fig. 4

-1s a cross-section of gas burner on line XY,

. in the drawing A is a gas bracket attached to a section of gas ipe B.

C is 9. movable, ollow arm pivotally secured to the bracket having at its opposite erlid a seat D terminating in a threadeo nip- D B So far the construction is the same as the ordinary gas fixtures except that the em trance to the hollow arm is through the top of the bracket by means of the 0 ening a leading from the usual duct a. part of the opening is in the form of a seat to receive a vertical valve '12 having an upper stem or guide c and lower stem .d. Immedi ately above the valve in the cap of the bracket is a round slot or recess e, slightly larger and shorter than the valve stem into which the stem is guided. In the lover part the lower part of the bracket of the bracket is a rod f working in a slot in directly in line with the valve stems. At the 11 per end it is enlar ed into a valve f and at t e lower 'end is a cad 9. Between the head and the a lan view of lever used in closing.

e upper bracket a spiral spr ng h is coiled about the rod to norniallv hold the valve in its seat; A curved pillar 1 threaded in the usual manner, is attached to the nipple. In the top of the shoulder F of the pillar is a threaded opening into ivhicl". is screwed the lower end of a threaded tube G, made preferabl of copper or other xpansive material. he

upper end of the tube is internally threaded to receive a threaded plug H, of similar material. The plug has a centralopenin through whichis inserted a wire I, made ofhardened steel or other material little afl'ected by heat and cold. The upper end of the wire forms a knot or bulb 'i to prevent drawing through the plug. The lower 'end of the wire is secured to a lever J pivotally secured in the seat D at the outer'end of the arm by means of a pin j-passing through the lever and the seat. The lever is preferably made of aluininurn or any material which combineslightness with strength. It extends to the opposite end of the arm, tapering gradually to the end, where it is flattened to. form a hammer to strike the valve stem d.- The wire is secured tothe levernear the pivoted end of the latter a slot 1." being niade'in one side of the lever in which the wire is adjusted, a bulb Zin the end of the .wire reventing the wire from drawing through. he lower part of slot is enlarged to receive the bulb and leave the surface of the lever free.

It will be seen that the valve regulating the supply of gas is controlled by the expansiveness of the tube G. When heat is applied by any means to'the tube, the latter expands;

and lengthens, lifting the wire, which raises the free eno of the lever,, raising the valve 6 from itsseat and letting in a supply ofgas.

The jet may then be lighted. Or, the valve may be raised by pressing the head ofthe rodf; When the valve is raised and the gas lighted the lever will hold the v'alve free from its seat. v h

' When the gas light is extinguished and the tube cools it contracts and shortens sufiiciently to -lower the wire and permit the free end of the lever to drop. The pressure of gas added to the weight of the valve will close the valve and effectually shut off the supply of gas.

In Fig. 3 is shown a gas burner'used in com nection withourdevice, and forms one of the features of our invention. A pillar or burner L is attached tothe nipple and has a central opening m from one side of which leads 2 stance a duct The sup ly of gas in the duct is the center of the base is a threaded opening ward flow of gas.

arm opposite said valve, the

both, securing them firmly together.

and in the under side is a circular groove 0. Owning from the groove upward throu h the base are three outlets p. for the gas. T e lower end of the tube 3 is adjusted to the central opening of the base. The up or rim of the burner and the outer rim of t e base are threaded, while the lower part of the cap 0 is threaded internally and fits over them The base is thinner at the entered e than in the center and forms a perfectly tig it joint in the center when the cap is screwed down, pre: ventin any flow of gas upward except through the outlets The cap or upper part of the mixer has our lateral o enings P for the inlet of air which mixes wit the up- The simplicity and utility of this form of lamp,.and its use with the automatic valve, is one of the novel features of our invention.

Our device may be used either with or' withoutthe usual valve in the gas pipe.

The frame for the support of a glass chimney may be placed over the cap which is of usual shape and adapted to bed the frame.

Having described our invention, what we claim as new and desire to secure by Letters Patent, isv 1. In an automatic cut-oil for gas burners, a valve in the arm of a gas fixture for regulat ing the flow of gas, a lever pivoted in said free end of said lever being adapted for contact with said valve, :3. piece of expansive material affected by heat and cold attached to said. arm, pivotal connection between said piece and the free end of said lever whereby the lever is moved to open said valve when heat is applied to said piece and said piece ex ended,

- and means connected with said valve or closing the same when the heat is withdrawn and said piece coole d, as and for the purposes specified. 1

2. In an automatic cut-off for gas burners,

a vertical valve in the arm of a gas fixture for regulating the flow of gas, a'lever ivoted oppositc said valve, the free end or said lever having contact with said valve and adapted to lift the same from its seat, a piece or expansive material affected by heat and cold attached to said arm, pivotal connectionbetween said piece and the free end of said lever whereby the lever is raised to lift said valve by the expansion of saidpiece when heat is applied and lowered to permit the closing of said valve when heat is withdrawn and said pliedce cooled, as and for the purposes specie V N q o. A'valve in the arm of a gas fixture for regulating the flow-'of gas, a pivoted levcr controlling said valve, atulie of expansive material aflected by heat and cold connecting with said arm, a wire connecting said tube with the free end of said lever whereby said lever is controlled by the expansion and contraction of said tube when heat is a plied or withdrawn, and means for indepen ently controlling said valve, as and for the purposes specified. a

4. A valve in the arm of a gas fixture for regulating the flow of gas, a lever in saidarm pivoted in the outer end thereof and adapted to control said valve, a tube of expansive material afiected by heat and cold connectingwith the'.outer end of said arm, a plug in the outer end of said tube, a wire connecting said plug with the free end of said lever whereby said lever is controlled by the expansion and contraction of said tube when heat is applied and withdrawn, as and for the. purposes specified.

5. A valve in'the arm of a said arm for controlling sai valve, an upright illar having a central opening from one si e of which leads a duct for the escape of gas, connecting with the outer end of said arm, a valve in said duct for regulating the supply of gas, a mixer consisting of a base and cap secured to said pillar, said base havgas fixture for regulating the flow of gas, a ivoted lever in I ing a central opening, and a circular groove on the under side thereof connecting with said duct, outlets in said groove for the es cape of gas, said cap having lateral openings for the inlet of air, a tubc of expansive material afiected by heat and cold secured in the central. 0 ening of said base, a plug in the outer en of said tube and a wire connecting said plug with said lever whereby said lever. is controlled by the expansion and contraction of said tube when heat is applied and withdrawn, as and for the purposes specified.

6. A valve in the arin of a gasfixture for regulating .the'fiow of gas, a pivoted lever controlling said valve, an upright curved pillar secured to the outer end of said arm, va

piece of expansive material affected by heat withdrawn, as and for the purposes specified.

In testimony whereof we have signed our names to this specification 1n the presence of two subscribing witnesses.

FOREST YOCKEY. CHARLES D. MoLEQD.

witnesses:

J. S. NELSON, H. C. Gannmnn. 

